If afferent arteriolar constriction occurs (with no change in efferent arteriole), what is the expected effect on GFR and RPF (renal plasma flow)?
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Correct answer: GFR decreases, RPF decreases
Constriction of the afferent arteriole reduces renal plasma flow and decreases glomerular hydrostatic pressure, thereby lowering both RPF and GFR.
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